JP2016090065A - Hot air heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot air heating device which changes a preheat temperature of a carbureter according to standby time of a preheating operation of the carbureter.SOLUTION: Ten times or more of standby times from a preheating switch is operated until an operation switch is operated are stored, and an average value μ of the standby time and a standard deviation σ are calculated by statistic value calculation means, and when the standby time is determined to be equal to or greater than μ, a preheating temperature of a carbureter 24 is decreased by a temperature drop rate Y, and when the stand by time is determined to be equal to or greater than μ+σ, the preheating temperature of the carbureter 24 is decreased by a temperature drop rate X. Thus, even when a state where the operation switch is not operated from the preheating switch is operated continues, the preheating temperature of the carbureter 24 decreases according to the elapsed standby time, so that power consumption by a vaporization heater 25 during a preheating operation can be suppressed.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a warm air heating apparatus that heats a room by burning fuel oil.

  Conventionally, in this type, a preheating switch for performing a preheating operation for preheating the vaporizer with a vaporizing heater at a predetermined preheating temperature and operating the heating operation before operating the operation switch to start the heating operation. By operating, after the user operates the operation switch, it is possible to quickly ignite in the combustion section and start the heating operation.Therefore, there is a hot air heating device that quickly raises the temperature in the room after operating the operation switch. It was. (For example, Patent Document 1)

Japanese Patent No. 2589206

  However, in this conventional device, if the operation switch is not operated after a user operates the preheating switch and the preheating operation is performed for a long time, the energization to the vaporizing heater by the preheating operation is continued and power is consumed. There was room for improvement.

In order to solve the above-mentioned problems, according to claim 1 of the present invention, a device main body, a vaporizer in the device main body where fuel oil is vaporized, and installed in the vaporizer and energized to heat the vaporizer. A vaporizing heater, a combustion section that ignites and burns fuel oil vaporized by the vaporizer, a preheating switch that energizes the vaporizing heater and preheats the vaporizer at a predetermined preheating temperature, and instructs a preheating operation; An operation switch for instructing the start of a heating operation to be combusted in the combustion section, and when the operation switch is operated, the vaporization heater is energized to heat the vaporizer and reach a predetermined ignition temperature to ignite the combustion section. And a controller for starting heating operation,
The control unit calculates a statistical value by storing a predetermined number of standby times from when the preheating switch is operated until the operation switch is operated, and the statistical value calculating unit calculates the statistical value. Time calculating means for calculating a predetermined time according to a statistical value, and when the control unit determines that the predetermined time calculated by the time calculating means has elapsed, the control unit lowers the predetermined preheating temperature. It is characterized by making it.

  Further, in claim 2, the statistical value calculating means stores the waiting time a predetermined number of times to calculate an average value or an average value and a standard deviation as statistical values, and the time calculating means is the statistical value calculating means. When the controller calculates a predetermined time based on the calculated average value or the average value and the standard deviation, and the control unit determines that the predetermined time calculated by the time calculation means has elapsed, the predetermined preheating It is characterized by lowering the temperature.

  According to a third aspect of the present invention, the statistical value calculating means stores the waiting time a predetermined number of times to calculate an average value or an average value and a standard deviation as statistical values, and the time calculating means is the statistical value calculating means. When the controller calculates a predetermined time based on the calculated average value or the average value and the standard deviation, and the control unit determines that the predetermined time calculated by the time calculation means has elapsed, the predetermined preheating The temperature is gradually lowered.

  According to a fourth aspect of the present invention, the statistical value calculating means stores the waiting time a predetermined number of times to calculate an average value or an average value and a standard deviation as statistical values, and the time calculating means is the statistical value calculating means. Calculate the predetermined time based on the calculated average value or the average value and the standard deviation, and the control unit decreases the predetermined preheating temperature when the predetermined time based on the average value calculated by the time calculating means has elapsed. The temperature decrease rate of the predetermined preheating temperature to be decreased after a predetermined time based on the average value and the standard deviation calculated by the time calculating means is larger than the temperature decrease rate of the predetermined preheating temperature. And

  Further, in the present invention, the statistical value calculating means stores the waiting time a predetermined number of times to calculate an average value and a standard deviation as statistical values, and the control unit is configured to calculate the waiting time as the statistical value calculating means. The energization of the vaporizing heater is stopped if it satisfies at least one of a value obtained by adding approximately three times the standard deviation to the average value calculated in step 1 or a predetermined energization stop time. did.

  According to the present invention, when it is determined that the predetermined time calculated by the time calculation means has elapsed, the predetermined preheating temperature is lowered. Therefore, the operation switch is operated after the preheating operation is performed by operating the preheating switch. Even if it is not, if it is determined that the predetermined time according to the statistical value of the standby time has elapsed, the predetermined preheating temperature of the vaporization heater is lowered, so that the operation switch is frequently operated after the preheating switch is operated. Heating operation can be started as soon as the operation switch is operated, and after the time during which the operation switch is frequently operated, power consumption in the vaporization heater can be suppressed, and energy saving can be achieved without impairing usability. it can

  If it is determined that the standby time has passed the average value calculated by the statistical value calculation means or the predetermined value calculated by the time calculation means based on the average value and the standard deviation, the predetermined preheating temperature is lowered. When the operation switch becomes less likely to be operated after the operation, the predetermined preheating temperature of the vaporization heater is lowered, so that power consumption in the vaporization heater can be suppressed and the power saving effect can be enhanced.

  If it is determined that the standby time has passed the average value calculated by the statistical value calculation means or the predetermined time calculated by the time calculation means based on the average value and the standard deviation, the predetermined preheating temperature is gradually decreased. Each time the operation switch is less likely to be operated after the switch is operated, the predetermined preheating temperature of the vaporization heater is lowered, so that the power consumption in the vaporization heater can be suppressed and the power saving effect can be further enhanced.

  In addition, a predetermined time based on the average value calculated by the time calculating means and the standard deviation has elapsed rather than the temperature decrease rate of the predetermined preheating temperature to be decreased when the predetermined time based on the average value calculated by the time calculating means has elapsed. Then, since the temperature decrease rate of the predetermined preheating temperature to be decreased is increased, when the operation switch is likely to be operated after the preheating operation, the temperature decrease rate is decreased and the heating operation start time is advanced. When the possibility that the operation switch is operated after the preheating operation is low, the temperature reduction rate can be increased to suppress the power consumption in the vaporizing heater and enhance the power saving effect.

  In addition, if the waiting time is equal to or greater than the average value calculated by the statistical value calculation means plus about three times the standard deviation, or the predetermined energization stop time or longer, the vaporization heater is supplied. Since the energization is stopped, the energization to the vaporizing heater is stopped when the possibility that the operation switch is operated after the preheating operation is low, so that the power consumption in the vaporizing heater can be suppressed and the power saving effect can be enhanced.

The front perspective view of the combustion equipment which shows one embodiment of this invention Cross-sectional view of the same embodiment The figure explaining the combustion system of the embodiment The figure explaining the operation part of the embodiment Control block diagram of the embodiment Flow chart for explaining preheating operation of the embodiment The flowchart explaining the control which changes the preheating temperature of a vaporizer | carburetor at the time of the preheating operation | movement of the embodiment. The figure explaining the change of the preheating temperature of the vaporizer in the elapsed time of the embodiment

Next, an embodiment of the present invention will be described with reference to the drawings.
1 is an instrument main body, 2 is an upper surface plate constituting the upper surface of the instrument main body 1, 3 is an operation unit which is provided on the upper surface plate 2 and is operated by various switches, 4 is a liquid crystal screen showing the contents of operations performed by the operation unit 3, etc. The liquid crystal panel 5 is displayed on the front side of the instrument body 1 and is provided with a louver 6 for guiding the warm air. The power plug 7 supplies electricity to the instrument body 1 by being plugged into a household outlet. It is.

  8 is a convection fan attached to the hot air inlet 9 on the back via a fan guard 10, 11 is a blower box communicating the hot air intake 9 and the hot air blower 6, and 12 is in the blower box 11. A burner as a combustion part provided by projecting the burner head 13, 14 is a combustion cylinder surrounding the burner head 13 to form a combustion space, and 15 is arranged in the blower box 11 directly above the combustion cylinder 14. This is a heat shield.

  16 is an oil supply tank for supplying fuel oil such as kerosene, 17 is a fixed tank for storing a predetermined amount of fuel oil supplied from the oil supply tank 16, 18 is an oil amount sensor for measuring the amount of fuel oil in the fixed tank 17 by a float, and 19 is fixed. An electromagnetic pump 22 that pumps fuel in the tank 17 to the burner 12 via the oil feed pipe 20 and the oil feed nozzle 21, and a combustion fan that blows combustion air through the blow pipe 23.

  Reference numeral 24 denotes a vaporizer that vaporizes the fuel oil, 25 denotes a vaporization heater that heats the vaporizer 24 to a predetermined ignition temperature at which the fuel oil can vaporize when energized, 26 denotes a vaporization temperature sensor that detects the temperature of the vaporizer 24, and 27 A flame hole network provided on the outer periphery of the burner head 13, 28 is a heat recovery ring that recovers combustion heat to the vaporizer 24, 29 is an igniter that sparks and discharges vaporized gas, and 30 monitors the state of the flame. It is a frame rod.

  The operation unit 3 includes an operation switch 31 for instructing start and stop of the heating operation by combustion in the burner 12, an extension switch 32 for continuously executing the heating operation even after a predetermined heating operation time has elapsed, and a vaporization heater. 25, a preheating switch 33 that preheats the carburetor 24 at a predetermined preheating temperature and starts a preheating operation that enables a heating operation within a few seconds after the operation switch 31 is operated, and a heating operation at the current time or a predetermined time. Operation other than a stop instruction for the operation switch 31 to prevent mischief of the child, a time setting switch 34 that enables setting of the timer operation to start the operation, a numerical adjustment switch 35 that adjusts the set temperature and current time in the heating operation A child lock switch 36 that disables the timer and a timer operation switch that can set the start time of the heating operation in two ways by the time setting switch 34. , And an eco switch 38 that performs eco operation with a reduced power consumption by forcibly reducing to 20 ° C. when the set temperature is 21 ° C. or more while suppressing the maximum heating power by 40%. To change the control of heating operation.

  Further, an operation lamp 39 that is turned on when the operation switch 31 is operated to start the heating operation, an extension lamp 40 that blinks 15 minutes before the automatic fire extinguishing, and a preheat that lights up when the preheating switch 33 is operated. The operation unit 3 includes a lamp 41, a timer operation lamp 42 that turns on the timer operation switch 37 operated in two ways, and an eco lamp 43 that lights up when the eco switch 38 is operated and the eco operation is started. The presence or absence of various switch operations can be easily confirmed visually.

  Reference numeral 44 denotes a control unit configured by a microcomputer that controls the instrument body 1. The control unit 44 waits until the operation switch 31 is operated and becomes ON after the preheating switch 33 is operated and becomes ON. Calculated by a storage means 45 for storing time, a statistical value calculation means 46 for calculating a statistical value such as an average value and a standard deviation based on the standby time stored in the storage means 45, and the statistical value calculation means 46 Time calculating means 47 for calculating a predetermined time according to each statistical value is provided.

Next, FIG. 6 shows the control when the preheat switch 33 is operated before the operation switch 31 for starting the heating operation is operated to preheat the carburetor 24 at a predetermined preheat temperature and advance the ignition time. This will be described with reference to a flowchart.
First, the control unit 44 determines whether or not the preheating switch 33 is operated to be turned on (step S101). If the preheating switch 33 is operated and is turned on, energization of the vaporizing heater 25 is started and the preheating lamp is started. 41 is turned on to start a preheating operation for preheating the vaporizer 24 at a predetermined preheating temperature (step S102). If the preheating switch 33 is not operated, the determination in step S101 is repeated.

  When energization of the vaporizing heater 25 is started in step S102, the control unit 44 determines whether the operation switch 31 is operated and is in an ON state (step S103), and if the operation switch 31 is operated and is in an ON state, By deleting the oldest waiting time data stored in the past from the time when the preheating switch 33 is turned on until the operation switch 31 is turned on, the data is overwritten and stored in the storage means 45. The standby time data is updated to the latest value (step S104), and when the predetermined ignition start temperature is detected by the vaporization temperature sensor 26, the igniter 29 is energized to ignite the vaporized gas, and heating is performed in the burner 12. Operation starts (step S105).

  If it is determined in step S103 that the operation switch 31 has not been operated, the control unit 44 determines whether the time elapsed since the preheating switch 33 was operated to be in the ON state is less than a predetermined energization stop time of 18 hours. If the time elapsed since the operation of the preheating switch 33 is less than 18 hours (step S106), it is determined whether the number of standby times stored in the storage means 45 is 10 or more, which is a predetermined number (step S106). S107) If the waiting time storage count is 10 times or more, the process proceeds to the next step. If the standby time storage count is less than 10, the operation switch 31 is operated in step S103 to determine whether it is turned on. repeat.

  If it is determined that the elapsed time after operating the preheating switch 33 in step S106 is 18 hours or more, the control unit 44 stops energizing the vaporizing heater 25, turns off the preheating lamp 41, and ends the preheating operation. (Step S108).

Next, control for changing the energization amount of the vaporizing heater 25 according to the standby time will be described based on the flowchart of FIG.
If it is determined in step S107 that the number of standby time storages stored in the storage unit 45 is 10 or more, the control unit 44 calculates the average value μ and the standard deviation σ of the standby time from the stored values of the 10 standby times in the past. It is calculated by the value calculating means 46 (step S201), and it is determined whether or not the current waiting time is equal to or longer than a time (μ + 3σ) obtained by adding a value three times the standard deviation σ to the average value μ calculated by the statistical value calculating means 46 ( In step S202), if it is determined that the current standby time is equal to or greater than μ + 3σ, the energization of the vaporizing heater 25 is stopped and the preheating lamp 41 is turned off, thereby terminating the preheating operation of the vaporizer 24 (step S203).

  If it is determined in step S202 that the current standby time is less than μ + 3σ, the control unit 44 adds the standard deviation σ to the average value μ that is the predetermined time calculated by the time calculation unit 47 (μ + σ). If it is determined above (step S204) and it is determined that the current standby time is equal to or greater than μ + σ, the vaporizing heater 25 is controlled so that the predetermined preheating temperature decreases at the temperature decrease rate X, and the preheating lamp 41 blinks to preheat. It is notified that the temperature is decreasing (step S205).

  If it is determined in step S204 that the current standby time is less than μ + σ, the control unit 44 determines whether the current standby time is equal to or greater than the average value μ that is the predetermined time calculated by the time calculation unit 47 (step S204). S206) If it is determined that the current standby time is μ or more, the vaporizing heater 25 is controlled so that the predetermined preheating temperature decreases at the temperature decrease rate Y, the preheating lamp 41 blinks, and the preheating temperature is decreased. Is notified (step S207). A numerical value satisfying the relationship of 0 <Y <X is substituted for the decrease rates X and Y.

  When the predetermined preheating temperature is decreased at the temperature decrease rate of either X or Y in step S205 or step S206 and the preheating lamp 41 is blinked, the control unit 44 sets the preheating temperature of the vaporizer 24 to the minimum preheating temperature. It is determined whether the preheat temperature of the vaporizer 24 has reached the minimum preheat temperature (step S208). If the preheat temperature of the vaporizer 24 has reached the minimum preheat temperature, the vaporization heater 25 is controlled so as to continue preheating at the minimum preheat temperature (step S209).

  Whether the current waiting time is determined to be less than the average value μ in step S206, whether the preheating temperature of the vaporizer 24 has not reached the minimum preheating temperature in step S208, or whether the vaporizer 24 is the minimum preheating in step S209 When preheating is continued at the temperature, the control unit 44 proceeds to step S103 and determines whether the operation switch 31 is operated and turned on.

Here, the relationship between the temperature decrease rate X in step S205 and the temperature decrease rate Y in step S207 will be described with reference to FIG.
First, when the preheating switch 33 is operated, the control unit 44 heats the vaporizer 24 by changing the ON / OFF state of the vaporization heater 25 so that the vaporizer 24 reaches a predetermined preheating temperature of about 170 ° C. When the control unit 44 determines that the standby time after the preheating switch 33 is operated becomes μ or more, as shown by the solid line in (1) of FIG. When the temperature is lowered and it is determined that the waiting time after the preheating switch 33 is operated becomes μ + σ or more, the preheating temperature of the vaporizer 24 is decreased at the temperature decrease rate X. At this time, considering the high possibility that the operation switch 31 is operated and the heating operation is started after the preheating switch 33 is operated, the temperature in the elapsed time from μ to μ + σ in the relationship of 0 <Y <X. The temperature decrease rate after μ + σ was made larger than the decrease rate. As a result, the temperature drop of the vaporizer 24 is slow in the time from μ to μ + σ where the operation switch 31 is likely to be operated after the preheating switch 33 is operated, so that the heating operation is quickly performed when the operation switch 31 is operated. Since the temperature of the vaporizer 24 is suddenly lowered at a time after μ + σ when the operation switch 31 is less likely to be operated after the preheating switch 33 is operated, the power consumption due to the energization of the vaporization heater 25 is reduced. Can be suppressed.

  In addition, the standby time from when the preheating switch 33 is operated to when the operation switch 31 is operated becomes μ + σ or more, and the preheating temperature of the vaporizer 24 is continuously decreased at the temperature decrease rate X, so that the preheating temperature is the minimum preheating temperature ( For example, when the temperature reaches 40 ° C., the control unit 44 stops the control to reduce the preheating temperature of the vaporizer 24 at the temperature decrease rate X, and maintains the preheating temperature at 40 ° C. When the controller 44 determines that the waiting time has reached μ + 3σ or more, or that a predetermined energization stop time of 18 hours has elapsed, whichever comes first, energization of the vaporizing heater 25 is performed. By stopping, power consumption in the vaporization heater 25 can be suppressed.

  Further, as indicated by the wavy line in FIG. 8 (2), the carburetor 24 has a predetermined temperature decrease rate during the waiting time from when the preheating switch 33 is operated until when the operation switch 31 is operated between μ and μ + σ. The preheating temperature of the carburetor 24 becomes the minimum preheating temperature at the time when the elapsed time of the preheating operation becomes μ + 3σ or more or when the elapsed time becomes 18 hours, whichever comes first, after μ + σ. The preheating temperature may continue to be lowered, and the time until the preheating temperature of the vaporizer 24 reaches the minimum preheating temperature is increased as compared with (1). Therefore, the waiting time is μ + 3σ or 18 hours have elapsed. The start time of the heating operation when the operation switch 31 is operated before the operation can be advanced.

  As described above, the standby time from when the preheating switch 33 is operated to when the operation switch 31 is operated is stored 10 times or more, and the average value μ and the standard deviation σ of the standby time are calculated by the statistical value calculation means 46. If it is determined that the waiting time is μ or more, the preheating temperature of the vaporizer 24 is decreased by the temperature decrease rate Y. If it is determined that the waiting time is μ + σ or more, the preheating temperature of the vaporizer 24 is decreased by the temperature decrease rate X. Therefore, even if the operation switch 31 is not operated after the preheating switch 33 is operated, the preheating temperature of the carburetor 24 is lowered according to the elapsed standby time. Power consumption can be suppressed.

  In addition, since the temperature decrease rate after μ + σ is larger than the temperature decrease rate during the preheating operation waiting time between μ and μ + σ, the operation switch 31 is operated after the preheating switch 33 is operated. Since the temperature decrease rate is low when the possibility of operation is low, the start time of the heating operation can be advanced when the operation switch 31 is likely to be operated during the preheating operation. When the possibility of being operated is low, the power saving effect can be enhanced by suppressing the power consumption in the vaporizing heater 25.

  Further, when the preheating operation wait time becomes μ + 3σ or more or when 18 hours have elapsed from the start of the preheating operation, whichever comes first, the energization of the vaporizing heater 25 is stopped. When it is determined that the possibility of operating 31 is low, the energization of the vaporizing heater 25 is stopped, so that the power saving effect can be enhanced by suppressing the power consumption in the vaporizing heater 25.

  Note that the control related to the temperature decrease rate of the preheat temperature of the vaporizer 24 during the preheat operation described in the present embodiment is an example. For example, if it is determined that the standby time of the preheat operation has become μ or more, the standby time is μ + 3σ. Control may be performed to reduce the preheating temperature at a constant temperature reduction rate so that the vaporizer 24 reaches the minimum preheating temperature when 18 hours are reached, and when the standby time becomes μ + 3σ or when 18 hours is reached. Thus, the preheat temperature may be controlled at a temperature decrease rate at which the energization amount of the vaporizing heater 25 becomes zero.

  Further, other configurations used in the present embodiment are presented as examples, and are not intended to limit the scope of the invention, and can be implemented in various other forms. Various omissions, replacements, and changes can be made without departing from the scope of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1 Instrument body 12 Burner (combustion part)
24 Vaporizer 25 Vaporizing heater 31 Operation switch 33 Preheating switch 44 Control unit 46 Statistical value calculation means 47 Time calculation means

Claims (5)

An appliance body, a vaporizer in the appliance body that vaporizes fuel, a vaporizer heater that is installed in the vaporizer and that is energized to heat the vaporizer, and ignites the fuel vaporized by the vaporizer A combustion section that burns, a preheating switch that instructs a preheating operation to energize the vaporizer and preheat the vaporizer at a predetermined preheating temperature, and an operation switch that instructs the start of a heating operation to burn in the combustion section A control unit for energizing the vaporizing heater when the operation switch is operated to heat the vaporizer and igniting the combustion unit when a predetermined ignition temperature is reached to start a heating operation;
The control unit calculates a statistical value by storing a predetermined number of standby times from when the preheating switch is operated until the operation switch is operated, and the statistical value calculating unit calculates the statistical value. Time calculating means for calculating a predetermined time according to a statistical value, and when the control unit determines that the predetermined time calculated by the time calculating means has elapsed, the control unit lowers the predetermined preheating temperature. A warm air heating device characterized in that   The statistical value calculation means stores the waiting time a predetermined number of times to calculate an average value or average value and standard deviation as statistical values, and the time calculation means calculates the average value or average value calculated by the statistical value calculation means When the control unit determines that the predetermined time calculated by the time calculation unit has elapsed, the control unit decreases the predetermined preheating temperature. The warm air heating device according to claim 1.   The statistical value calculation means stores the waiting time a predetermined number of times to calculate an average value or average value and standard deviation as statistical values, and the time calculation means calculates the average value or average value calculated by the statistical value calculation means When the control unit determines that the predetermined time calculated by the time calculation means has elapsed, the control unit gradually decreases the predetermined preheating temperature. The hot air heating apparatus according to claim 1, wherein   The statistical value calculation means stores the waiting time a predetermined number of times to calculate an average value or average value and standard deviation as statistical values, and the time calculation means calculates the average value or average value calculated by the statistical value calculation means And a predetermined time based on the standard deviation, and the control unit lowers the temperature reduction rate of the predetermined preheating temperature to be decreased when the predetermined time based on the average value calculated by the time calculating means has elapsed. 2. The temperature reduction rate of the predetermined preheating temperature that is decreased when a predetermined time based on an average value and a standard deviation calculated by the time calculating means elapses is increased. Warm air heating device.   The statistical value calculating means stores the waiting time a predetermined number of times to calculate an average value and a standard deviation as statistical values, and the control unit sets the waiting time as a standard value calculated by the statistical value calculating means. The energization of the vaporizing heater is stopped if either one of the values obtained by adding about three times the deviation or the predetermined energization stop time is satisfied. The hot-air heating device according to any one of claims 1 to 4.

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